From 45114c364d476ba0bbc294d63955f49fbf378779 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Wed, 8 Mar 2017 16:42:48 +0000 Subject: [PATCH] ASoC: cs35l35: Add device tree binding for I2S drive configuration Add a binding for setting how the I2S pins are driven in unused slots, currently the chip will just use the default of drive 0, however this causes issues when multiple devices are attached to the same bus. Signed-off-by: Charles Keepax Acked-by: Brian Austin Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/cs35l35.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/cs35l35.txt b/Documentation/devicetree/bindings/sound/cs35l35.txt index 07d9c0f177fb..958f0eabfdfc 100644 --- a/Documentation/devicetree/bindings/sound/cs35l35.txt +++ b/Documentation/devicetree/bindings/sound/cs35l35.txt @@ -37,6 +37,11 @@ Optional properties: Table 3-10 of the datasheet lists drive-strength specifications 0 = 1x (Default) 1 = .5x + - cirrus,sp-drv-unused : Determines how unused slots should be driven on the + Serial Port. + 0 - Hi-Z + 2 - Drive 0's (Default) + 3 - Drive 1's - cirrus,bst-pdn-fet-on : Boolean to determine if the Boost PDN control powers down with a rectification FET On or Off. If VSPK is supplied -- 2.20.1